drivers/media/video/ivtv/ivtv-driver.h

   1 /*
   2     ivtv driver internal defines and structures
   3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   4     Copyright (C) 2004  Chris Kennedy <c@groovy.org>
   5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #ifndef IVTV_DRIVER_H
  23 #define IVTV_DRIVER_H
  24
  25 /* Internal header for ivtv project:
  26  * Driver for the cx23415/6 chip.
  27  * Author: Kevin Thayer (nufan_wfk at yahoo.com)
  28  * License: GPL
  29  * http://www.ivtvdriver.org
  30  *
  31  * -----
  32  * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
  33  *                      and Takeru KOMORIYA<komoriya@paken.org>
  34  *
  35  * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
  36  *                using information provided by Jiun-Kuei Jung @ AVerMedia.
  37  */
  38
  39 #include <linux/version.h>
  40 #include <linux/module.h>
  41 #include <linux/init.h>
  42 #include <linux/delay.h>
  43 #include <linux/sched.h>
  44 #include <linux/fs.h>
  45 #include <linux/pci.h>
  46 #include <linux/interrupt.h>
  47 #include <linux/spinlock.h>
  48 #include <linux/i2c.h>
  49 #include <linux/i2c-algo-bit.h>
  50 #include <linux/list.h>
  51 #include <linux/unistd.h>
  52 #include <linux/byteorder/swab.h>
  53 #include <linux/pagemap.h>
  54 #include <linux/scatterlist.h>
  55 #include <linux/workqueue.h>
  56 #include <linux/mutex.h>
  57 #include <asm/uaccess.h>
  58 #include <asm/system.h>
  59
  60 #include <linux/dvb/video.h>
  61 #include <linux/dvb/audio.h>
  62 #include <media/v4l2-common.h>
  63 #include <media/tuner.h>
  64 #include <media/cx2341x.h>
  65
  66 #include <linux/ivtv.h>
  67
  68
  69 /* Memory layout */
  70 #define IVTV_ENCODER_OFFSET     0x00000000
  71 #define IVTV_ENCODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  72 #define IVTV_DECODER_OFFSET     0x01000000
  73 #define IVTV_DECODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  74 #define IVTV_REG_OFFSET         0x02000000
  75 #define IVTV_REG_SIZE           0x00010000
  76
  77 /* Maximum ivtv driver instances. Some people have a huge number of
  78    capture cards, so set this to a high value. */
  79 #define IVTV_MAX_CARDS 32
  80
  81 #define IVTV_ENC_STREAM_TYPE_MPG  0
  82 #define IVTV_ENC_STREAM_TYPE_YUV  1
  83 #define IVTV_ENC_STREAM_TYPE_VBI  2
  84 #define IVTV_ENC_STREAM_TYPE_PCM  3
  85 #define IVTV_ENC_STREAM_TYPE_RAD  4
  86 #define IVTV_DEC_STREAM_TYPE_MPG  5
  87 #define IVTV_DEC_STREAM_TYPE_VBI  6
  88 #define IVTV_DEC_STREAM_TYPE_VOUT 7
  89 #define IVTV_DEC_STREAM_TYPE_YUV  8
  90 #define IVTV_MAX_STREAMS          9
  91
  92 #define IVTV_DMA_SG_OSD_ENT     (2883584/PAGE_SIZE)     /* sg entities */
  93
  94 /* DMA Registers */
  95 #define IVTV_REG_DMAXFER        (0x0000)
  96 #define IVTV_REG_DMASTATUS      (0x0004)
  97 #define IVTV_REG_DECDMAADDR     (0x0008)
  98 #define IVTV_REG_ENCDMAADDR     (0x000c)
  99 #define IVTV_REG_DMACONTROL     (0x0010)
 100 #define IVTV_REG_IRQSTATUS      (0x0040)
 101 #define IVTV_REG_IRQMASK        (0x0048)
 102
 103 /* Setup Registers */
 104 #define IVTV_REG_ENC_SDRAM_REFRESH      (0x07F8)
 105 #define IVTV_REG_ENC_SDRAM_PRECHARGE    (0x07FC)
 106 #define IVTV_REG_DEC_SDRAM_REFRESH      (0x08F8)
 107 #define IVTV_REG_DEC_SDRAM_PRECHARGE    (0x08FC)
 108 #define IVTV_REG_VDM                    (0x2800)
 109 #define IVTV_REG_AO                     (0x2D00)
 110 #define IVTV_REG_BYTEFLUSH              (0x2D24)
 111 #define IVTV_REG_SPU                    (0x9050)
 112 #define IVTV_REG_HW_BLOCKS              (0x9054)
 113 #define IVTV_REG_VPU                    (0x9058)
 114 #define IVTV_REG_APU                    (0xA064)
 115
 116 /* i2c stuff */
 117 #define I2C_CLIENTS_MAX 16
 118
 119 /* debugging */
 120 extern int ivtv_debug;
 121
 122 #define IVTV_DBGFLG_WARN    (1 << 0)
 123 #define IVTV_DBGFLG_INFO    (1 << 1)
 124 #define IVTV_DBGFLG_MB      (1 << 2)
 125 #define IVTV_DBGFLG_IOCTL   (1 << 3)
 126 #define IVTV_DBGFLG_FILE    (1 << 4)
 127 #define IVTV_DBGFLG_DMA     (1 << 5)
 128 #define IVTV_DBGFLG_IRQ     (1 << 6)
 129 #define IVTV_DBGFLG_DEC     (1 << 7)
 130 #define IVTV_DBGFLG_YUV     (1 << 8)
 131 #define IVTV_DBGFLG_I2C     (1 << 9)
 132 /* Flag to turn on high volume debugging */
 133 #define IVTV_DBGFLG_HIGHVOL (1 << 10)
 134
 135 /* NOTE: extra space before comma in 'itv->num , ## args' is required for
 136    gcc-2.95, otherwise it won't compile. */
 137 #define IVTV_DEBUG(x, type, fmt, args...) \
 138         do { \
 139                 if ((x) & ivtv_debug) \
 140                         printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
 141         } while (0)
 142 #define IVTV_DEBUG_WARN(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 143 #define IVTV_DEBUG_INFO(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 144 #define IVTV_DEBUG_MB(fmt, args...)    IVTV_DEBUG(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 145 #define IVTV_DEBUG_DMA(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 146 #define IVTV_DEBUG_IOCTL(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 147 #define IVTV_DEBUG_FILE(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 148 #define IVTV_DEBUG_I2C(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 149 #define IVTV_DEBUG_IRQ(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 150 #define IVTV_DEBUG_DEC(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 151 #define IVTV_DEBUG_YUV(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 152
 153 #define IVTV_DEBUG_HIGH_VOL(x, type, fmt, args...) \
 154         do { \
 155                 if (((x) & ivtv_debug) && (ivtv_debug & IVTV_DBGFLG_HIGHVOL)) \
 156                         printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
 157         } while (0)
 158 #define IVTV_DEBUG_HI_WARN(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 159 #define IVTV_DEBUG_HI_INFO(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 160 #define IVTV_DEBUG_HI_MB(fmt, args...)    IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 161 #define IVTV_DEBUG_HI_DMA(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 162 #define IVTV_DEBUG_HI_IOCTL(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 163 #define IVTV_DEBUG_HI_FILE(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 164 #define IVTV_DEBUG_HI_I2C(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 165 #define IVTV_DEBUG_HI_IRQ(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 166 #define IVTV_DEBUG_HI_DEC(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 167 #define IVTV_DEBUG_HI_YUV(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 168
 169 /* Standard kernel messages */
 170 #define IVTV_ERR(fmt, args...)      printk(KERN_ERR  "ivtv%d: " fmt, itv->num , ## args)
 171 #define IVTV_WARN(fmt, args...)     printk(KERN_WARNING "ivtv%d: " fmt, itv->num , ## args)
 172 #define IVTV_INFO(fmt, args...)     printk(KERN_INFO "ivtv%d: " fmt, itv->num , ## args)
 173
 174 /* output modes (cx23415 only) */
 175 #define OUT_NONE        0
 176 #define OUT_MPG         1
 177 #define OUT_YUV         2
 178 #define OUT_UDMA_YUV    3
 179 #define OUT_PASSTHROUGH 4
 180
 181 #define IVTV_MAX_PGM_INDEX (400)
 182
 183 struct ivtv_options {
 184         int kilobytes[IVTV_MAX_STREAMS];        /* size in kilobytes of each stream */
 185         int cardtype;                           /* force card type on load */
 186         int tuner;                              /* set tuner on load */
 187         int radio;                              /* enable/disable radio */
 188         int newi2c;                             /* new I2C algorithm */
 189 };
 190
 191 /* ivtv-specific mailbox template */
 192 struct ivtv_mailbox {
 193         u32 flags;
 194         u32 cmd;
 195         u32 retval;
 196         u32 timeout;
 197         u32 data[CX2341X_MBOX_MAX_DATA];
 198 };
 199
 200 struct ivtv_api_cache {
 201         unsigned long last_jiffies;             /* when last command was issued */
 202         u32 data[CX2341X_MBOX_MAX_DATA];        /* last sent api data */
 203 };
 204
 205 struct ivtv_mailbox_data {
 206         volatile struct ivtv_mailbox __iomem *mbox;
 207         /* Bits 0-2 are for the encoder mailboxes, 0-1 are for the decoder mailboxes.
 208            If the bit is set, then the corresponding mailbox is in use by the driver. */
 209         unsigned long busy;
 210         u8 max_mbox;
 211 };
 212
 213 /* per-buffer bit flags */
 214 #define IVTV_F_B_NEED_BUF_SWAP  (1 << 0)        /* this buffer should be byte swapped */
 215
 216 /* per-stream, s_flags */
 217 #define IVTV_F_S_DMA_PENDING    0       /* this stream has pending DMA */
 218 #define IVTV_F_S_DMA_HAS_VBI    1       /* the current DMA request also requests VBI data */
 219 #define IVTV_F_S_NEEDS_DATA     2       /* this decoding stream needs more data */
 220
 221 #define IVTV_F_S_CLAIMED        3       /* this stream is claimed */
 222 #define IVTV_F_S_STREAMING      4       /* the fw is decoding/encoding this stream */
 223 #define IVTV_F_S_INTERNAL_USE   5       /* this stream is used internally (sliced VBI processing) */
 224 #define IVTV_F_S_PASSTHROUGH    6       /* this stream is in passthrough mode */
 225 #define IVTV_F_S_STREAMOFF      7       /* signal end of stream EOS */
 226 #define IVTV_F_S_APPL_IO        8       /* this stream is used read/written by an application */
 227
 228 #define IVTV_F_S_PIO_PENDING    9       /* this stream has pending PIO */
 229 #define IVTV_F_S_PIO_HAS_VBI    1       /* the current PIO request also requests VBI data */
 230
 231 /* per-ivtv, i_flags */
 232 #define IVTV_F_I_DMA               0    /* DMA in progress */
 233 #define IVTV_F_I_UDMA              1    /* UDMA in progress */
 234 #define IVTV_F_I_UDMA_PENDING      2    /* UDMA pending */
 235 #define IVTV_F_I_SPEED_CHANGE      3    /* a speed change is in progress */
 236 #define IVTV_F_I_EOS               4    /* end of encoder stream reached */
 237 #define IVTV_F_I_RADIO_USER        5    /* the radio tuner is selected */
 238 #define IVTV_F_I_DIG_RST           6    /* reset digitizer */
 239 #define IVTV_F_I_DEC_YUV           7    /* YUV instead of MPG is being decoded */
 240 #define IVTV_F_I_UPDATE_CC         9    /* CC should be updated */
 241 #define IVTV_F_I_UPDATE_WSS        10   /* WSS should be updated */
 242 #define IVTV_F_I_UPDATE_VPS        11   /* VPS should be updated */
 243 #define IVTV_F_I_DECODING_YUV      12   /* this stream is YUV frame decoding */
 244 #define IVTV_F_I_ENC_PAUSED        13   /* the encoder is paused */
 245 #define IVTV_F_I_VALID_DEC_TIMINGS 14   /* last_dec_timing is valid */
 246 #define IVTV_F_I_HAVE_WORK         15   /* used in the interrupt handler: there is work to be done */
 247 #define IVTV_F_I_WORK_HANDLER_VBI  16   /* there is work to be done for VBI */
 248 #define IVTV_F_I_WORK_HANDLER_YUV  17   /* there is work to be done for YUV */
 249 #define IVTV_F_I_WORK_HANDLER_PIO  18   /* there is work to be done for PIO */
 250 #define IVTV_F_I_PIO               19   /* PIO in progress */
 251 #define IVTV_F_I_DEC_PAUSED        20   /* the decoder is paused */
 252 #define IVTV_F_I_INITED            21   /* set after first open */
 253 #define IVTV_F_I_FAILED            22   /* set if first open failed */
 254
 255 /* Event notifications */
 256 #define IVTV_F_I_EV_DEC_STOPPED    28   /* decoder stopped event */
 257 #define IVTV_F_I_EV_VSYNC          29   /* VSYNC event */
 258 #define IVTV_F_I_EV_VSYNC_FIELD    30   /* VSYNC event field (0 = first, 1 = second field) */
 259 #define IVTV_F_I_EV_VSYNC_ENABLED  31   /* VSYNC event enabled */
 260
 261 /* Scatter-Gather array element, used in DMA transfers */
 262 struct ivtv_sg_element {
 263         u32 src;
 264         u32 dst;
 265         u32 size;
 266 };
 267
 268 struct ivtv_user_dma {
 269         struct mutex lock;
 270         int page_count;
 271         struct page *map[IVTV_DMA_SG_OSD_ENT];
 272         /* Needed when dealing with highmem userspace buffers */
 273         struct page *bouncemap[IVTV_DMA_SG_OSD_ENT];
 274
 275         /* Base Dev SG Array for cx23415/6 */
 276         struct ivtv_sg_element SGarray[IVTV_DMA_SG_OSD_ENT];
 277         dma_addr_t SG_handle;
 278         int SG_length;
 279
 280         /* SG List of Buffers */
 281         struct scatterlist SGlist[IVTV_DMA_SG_OSD_ENT];
 282 };
 283
 284 struct ivtv_dma_page_info {
 285         unsigned long uaddr;
 286         unsigned long first;
 287         unsigned long last;
 288         unsigned int offset;
 289         unsigned int tail;
 290         int page_count;
 291 };
 292
 293 struct ivtv_buffer {
 294         struct list_head list;
 295         dma_addr_t dma_handle;
 296         unsigned short b_flags;
 297         unsigned short dma_xfer_cnt;
 298         char *buf;
 299         u32 bytesused;
 300         u32 readpos;
 301 };
 302
 303 struct ivtv_queue {
 304         struct list_head list;          /* the list of buffers in this queue */
 305         u32 buffers;                    /* number of buffers in this queue */
 306         u32 length;                     /* total number of bytes of available buffer space */
 307         u32 bytesused;                  /* total number of bytes used in this queue */
 308 };
 309
 310 struct ivtv;                            /* forward reference */
 311
 312 struct ivtv_stream {
 313         /* These first four fields are always set, even if the stream
 314            is not actually created. */
 315         struct video_device *v4l2dev;   /* NULL when stream not created */
 316         struct ivtv *itv;               /* for ease of use */
 317         const char *name;               /* name of the stream */
 318         int type;                       /* stream type */
 319
 320         u32 id;
 321         spinlock_t qlock;               /* locks access to the queues */
 322         unsigned long s_flags;          /* status flags, see above */
 323         int dma;                        /* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or PCI_DMA_NONE */
 324         u32 pending_offset;
 325         u32 pending_backup;
 326         u64 pending_pts;
 327
 328         u32 dma_offset;
 329         u32 dma_backup;
 330         u64 dma_pts;
 331
 332         int subtype;
 333         wait_queue_head_t waitq;
 334         u32 dma_last_offset;
 335
 336         /* Buffer Stats */
 337         u32 buffers;
 338         u32 buf_size;
 339         u32 buffers_stolen;
 340
 341         /* Buffer Queues */
 342         struct ivtv_queue q_free;       /* free buffers */
 343         struct ivtv_queue q_full;       /* full buffers */
 344         struct ivtv_queue q_io;         /* waiting for I/O */
 345         struct ivtv_queue q_dma;        /* waiting for DMA */
 346         struct ivtv_queue q_predma;     /* waiting for DMA */
 347
 348         /* DMA xfer counter, buffers belonging to the same DMA
 349            xfer will have the same dma_xfer_cnt. */
 350         u16 dma_xfer_cnt;
 351
 352         /* Base Dev SG Array for cx23415/6 */
 353         struct ivtv_sg_element *sg_pending;
 354         struct ivtv_sg_element *sg_processing;
 355         struct ivtv_sg_element *sg_dma;
 356         dma_addr_t sg_handle;
 357         int sg_pending_size;
 358         int sg_processing_size;
 359         int sg_processed;
 360
 361         /* SG List of Buffers */
 362         struct scatterlist *SGlist;
 363 };
 364
 365 struct ivtv_open_id {
 366         u32 open_id;                    /* unique ID for this file descriptor */
 367         int type;                       /* stream type */
 368         int yuv_frames;                 /* 1: started OUT_UDMA_YUV output mode */
 369         enum v4l2_priority prio;        /* priority */
 370         struct ivtv *itv;
 371 };
 372
 373 struct yuv_frame_info
 374 {
 375         u32 update;
 376         s32 src_x;
 377         s32 src_y;
 378         u32 src_w;
 379         u32 src_h;
 380         s32 dst_x;
 381         s32 dst_y;
 382         u32 dst_w;
 383         u32 dst_h;
 384         s32 pan_x;
 385         s32 pan_y;
 386         u32 vis_w;
 387         u32 vis_h;
 388         u32 interlaced_y;
 389         u32 interlaced_uv;
 390         s32 tru_x;
 391         u32 tru_w;
 392         u32 tru_h;
 393         u32 offset_y;
 394         s32 lace_mode;
 395 };
 396
 397 #define IVTV_YUV_MODE_INTERLACED        0x00
 398 #define IVTV_YUV_MODE_PROGRESSIVE       0x01
 399 #define IVTV_YUV_MODE_AUTO              0x02
 400 #define IVTV_YUV_MODE_MASK              0x03
 401
 402 #define IVTV_YUV_SYNC_EVEN              0x00
 403 #define IVTV_YUV_SYNC_ODD               0x04
 404 #define IVTV_YUV_SYNC_MASK              0x04
 405
 406 #define IVTV_YUV_BUFFERS 8
 407
 408 struct yuv_playback_info
 409 {
 410         u32 reg_2834;
 411         u32 reg_2838;
 412         u32 reg_283c;
 413         u32 reg_2840;
 414         u32 reg_2844;
 415         u32 reg_2848;
 416         u32 reg_2854;
 417         u32 reg_285c;
 418         u32 reg_2864;
 419
 420         u32 reg_2870;
 421         u32 reg_2874;
 422         u32 reg_2890;
 423         u32 reg_2898;
 424         u32 reg_289c;
 425
 426         u32 reg_2918;
 427         u32 reg_291c;
 428         u32 reg_2920;
 429         u32 reg_2924;
 430         u32 reg_2928;
 431         u32 reg_292c;
 432         u32 reg_2930;
 433
 434         u32 reg_2934;
 435
 436         u32 reg_2938;
 437         u32 reg_293c;
 438         u32 reg_2940;
 439         u32 reg_2944;
 440         u32 reg_2948;
 441         u32 reg_294c;
 442         u32 reg_2950;
 443         u32 reg_2954;
 444         u32 reg_2958;
 445         u32 reg_295c;
 446         u32 reg_2960;
 447         u32 reg_2964;
 448         u32 reg_2968;
 449         u32 reg_296c;
 450
 451         u32 reg_2970;
 452
 453         int v_filter_1;
 454         int v_filter_2;
 455         int h_filter;
 456
 457         u32 osd_x_offset;
 458         u32 osd_y_offset;
 459
 460         u32 osd_x_pan;
 461         u32 osd_y_pan;
 462
 463         u32 osd_vis_w;
 464         u32 osd_vis_h;
 465
 466         int decode_height;
 467
 468         int frame_interlaced;
 469
 470         int lace_mode;
 471         int lace_threshold;
 472         int lace_sync_field;
 473
 474         atomic_t next_dma_frame;
 475         atomic_t next_fill_frame;
 476
 477         u32 yuv_forced_update;
 478         int update_frame;
 479
 480         int sync_field[IVTV_YUV_BUFFERS];  /* Field to sync on */
 481         int field_delay[IVTV_YUV_BUFFERS]; /* Flag to extend duration of previous frame */
 482         u8 fields_lapsed;   /* Counter used when delaying a frame */
 483
 484         struct yuv_frame_info new_frame_info[IVTV_YUV_BUFFERS];
 485         struct yuv_frame_info old_frame_info;
 486         struct yuv_frame_info old_frame_info_args;
 487
 488         void *blanking_ptr;
 489         dma_addr_t blanking_dmaptr;
 490
 491         int stream_size;
 492
 493         u8 draw_frame; /* PVR350 buffer to draw into */
 494         u8 max_frames_buffered; /* Maximum number of frames to buffer */
 495 };
 496
 497 #define IVTV_VBI_FRAMES 32
 498
 499 /* VBI data */
 500 struct vbi_cc {
 501         u8 odd[2];      /* two-byte payload of odd field */
 502         u8 even[2];     /* two-byte payload of even field */;
 503 };
 504
 505 struct vbi_vps {
 506         u8 data[5];     /* five-byte VPS payload */
 507 };
 508
 509 struct vbi_info {
 510         /* VBI general data, does not change during streaming */
 511
 512         u32 raw_decoder_line_size;              /* raw VBI line size from digitizer */
 513         u8 raw_decoder_sav_odd_field;           /* raw VBI Start Active Video digitizer code of odd field */
 514         u8 raw_decoder_sav_even_field;          /* raw VBI Start Active Video digitizer code of even field */
 515         u32 sliced_decoder_line_size;           /* sliced VBI line size from digitizer */
 516         u8 sliced_decoder_sav_odd_field;        /* sliced VBI Start Active Video digitizer code of odd field */
 517         u8 sliced_decoder_sav_even_field;       /* sliced VBI Start Active Video digitizer code of even field */
 518
 519         u32 start[2];                           /* start of first VBI line in the odd/even fields */
 520         u32 count;                              /* number of VBI lines per field */
 521         u32 raw_size;                           /* size of raw VBI line from the digitizer */
 522         u32 sliced_size;                        /* size of sliced VBI line from the digitizer */
 523
 524         u32 dec_start;                          /* start in decoder memory of VBI re-insertion buffers */
 525         u32 enc_start;                          /* start in encoder memory of VBI capture buffers */
 526         u32 enc_size;                           /* size of VBI capture area */
 527         int fpi;                                /* number of VBI frames per interrupt */
 528
 529         struct v4l2_format in;                  /* current VBI capture format */
 530         struct v4l2_sliced_vbi_format *sliced_in; /* convenience pointer to sliced struct in vbi.in union */
 531         int insert_mpeg;                        /* if non-zero, then embed VBI data in MPEG stream */
 532
 533         /* Raw VBI compatibility hack */
 534
 535         u32 frame;                              /* frame counter hack needed for backwards compatibility
 536                                                    of old VBI software */
 537
 538         /* Sliced VBI output data */
 539
 540         struct vbi_cc cc_payload[256];          /* sliced VBI CC payload array: it is an array to
 541                                                    prevent dropping CC data if they couldn't be
 542                                                    processed fast enough */
 543         int cc_payload_idx;                     /* index in cc_payload */
 544         u8 cc_missing_cnt;                      /* counts number of frames without CC for passthrough mode */
 545         int wss_payload;                        /* sliced VBI WSS payload */
 546         u8 wss_missing_cnt;                     /* counts number of frames without WSS for passthrough mode */
 547         struct vbi_vps vps_payload;             /* sliced VBI VPS payload */
 548
 549         /* Sliced VBI capture data */
 550
 551         struct v4l2_sliced_vbi_data sliced_data[36];    /* sliced VBI storage for VBI encoder stream */
 552         struct v4l2_sliced_vbi_data sliced_dec_data[36];/* sliced VBI storage for VBI decoder stream */
 553
 554         /* VBI Embedding data */
 555
 556         /* Buffer for VBI data inserted into MPEG stream.
 557            The first byte is a dummy byte that's never used.
 558            The next 16 bytes contain the MPEG header for the VBI data,
 559            the remainder is the actual VBI data.
 560            The max size accepted by the MPEG VBI reinsertion turns out
 561            to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes,
 562            where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is
 563            a single line header byte and 2 * 18 is the number of VBI lines per frame.
 564
 565            However, it seems that the data must be 1K aligned, so we have to
 566            pad the data until the 1 or 2 K boundary.
 567
 568            This pointer array will allocate 2049 bytes to store each VBI frame. */
 569         u8 *sliced_mpeg_data[IVTV_VBI_FRAMES];
 570         u32 sliced_mpeg_size[IVTV_VBI_FRAMES];
 571         struct ivtv_buffer sliced_mpeg_buf;     /* temporary buffer holding data from sliced_mpeg_data */
 572         u32 inserted_frame;                     /* index in sliced_mpeg_size of next sliced data
 573                                                    to be inserted in the MPEG stream */
 574 };
 575
 576 /* forward declaration of struct defined in ivtv-cards.h */
 577 struct ivtv_card;
 578
 579 /* Struct to hold info about ivtv cards */
 580 struct ivtv {
 581         /* General fixed card data */
 582         int num;                        /* board number, -1 during init! */
 583         char name[8];                   /* board name for printk and interrupts (e.g. 'ivtv0') */
 584         struct pci_dev *dev;            /* PCI device */
 585         const struct ivtv_card *card;   /* card information */
 586         const char *card_name;          /* full name of the card */
 587         u8 has_cx23415;                 /* 1 if it is a cx23415 based card, 0 for cx23416 */
 588         u8 pvr150_workaround;           /* 1 if the cx25840 needs to workaround a PVR150 bug */
 589         u8 nof_inputs;                  /* number of video inputs */
 590         u8 nof_audio_inputs;            /* number of audio inputs */
 591         u32 v4l2_cap;                   /* V4L2 capabilities of card */
 592         u32 hw_flags;                   /* hardware description of the board */
 593         int tunerid;                    /* userspace tuner ID for experimental Xceive tuner support */
 594         v4l2_std_id tuner_std;          /* the norm of the card's tuner (fixed) */
 595                                         /* controlling video decoder function */
 596         int (*video_dec_func)(struct ivtv *, unsigned int, void *);
 597         u32 base_addr;                  /* PCI resource base address */
 598         volatile void __iomem *enc_mem; /* pointer to mapped encoder memory */
 599         volatile void __iomem *dec_mem; /* pointer to mapped decoder memory */
 600         volatile void __iomem *reg_mem; /* pointer to mapped registers */
 601         struct ivtv_options options;    /* user options */
 602
 603
 604         /* High-level state info */
 605         unsigned long i_flags;          /* global ivtv flags */
 606         u8 is_50hz;                     /* 1 if the current capture standard is 50 Hz */
 607         u8 is_60hz                      /* 1 if the current capture standard is 60 Hz */;
 608         u8 is_out_50hz                  /* 1 if the current TV output standard is 50 Hz */;
 609         u8 is_out_60hz                  /* 1 if the current TV output standard is 60 Hz */;
 610         int output_mode;                /* decoder output mode: NONE, MPG, YUV, UDMA YUV, passthrough */
 611         u32 audio_input;                /* current audio input */
 612         u32 active_input;               /* current video input */
 613         u32 active_output;              /* current video output */
 614         v4l2_std_id std;                /* current capture TV standard */
 615         v4l2_std_id std_out;            /* current TV output standard */
 616         u8 audio_stereo_mode;           /* decoder setting how to handle stereo MPEG audio */
 617         u8 audio_bilingual_mode;        /* decoder setting how to handle bilingual MPEG audio */
 618         struct cx2341x_mpeg_params params;              /* current encoder parameters */
 619
 620
 621         /* Locking */
 622         spinlock_t lock;                /* lock access to this struct */
 623         struct mutex serialize_lock;    /* mutex used to serialize open/close/start/stop/ioctl operations */
 624
 625
 626         /* Streams */
 627         int stream_buf_size[IVTV_MAX_STREAMS];          /* stream buffer size */
 628         struct ivtv_stream streams[IVTV_MAX_STREAMS];   /* stream data */
 629         atomic_t capturing;             /* count number of active capture streams */
 630         atomic_t decoding;              /* count number of active decoding streams */
 631
 632
 633         /* Interrupts & DMA */
 634         u32 irqmask;                    /* active interrupts */
 635         u32 irq_rr_idx;                 /* round-robin stream index */
 636         struct workqueue_struct *irq_work_queues;       /* workqueue for PIO/YUV/VBI actions */
 637         struct work_struct irq_work_queue;              /* work entry */
 638         spinlock_t dma_reg_lock;        /* lock access to DMA engine registers */
 639         int cur_dma_stream;             /* index of current stream doing DMA (-1 if none) */
 640         int cur_pio_stream;             /* index of current stream doing PIO (-1 if none) */
 641         u32 dma_data_req_offset;        /* store offset in decoder memory of current DMA request */
 642         u32 dma_data_req_size;          /* store size of current DMA request */
 643         int dma_retries;                /* current DMA retry attempt */
 644         struct ivtv_user_dma udma;      /* user based DMA for OSD */
 645         struct timer_list dma_timer;    /* timer used to catch unfinished DMAs */
 646         u32 last_vsync_field;           /* last seen vsync field */
 647         wait_queue_head_t dma_waitq;    /* wake up when the current DMA is finished */
 648         wait_queue_head_t eos_waitq;    /* wake up when EOS arrives */
 649         wait_queue_head_t event_waitq;  /* wake up when the next decoder event arrives */
 650         wait_queue_head_t vsync_waitq;  /* wake up when the next decoder vsync arrives */
 651
 652
 653         /* Mailbox */
 654         struct ivtv_mailbox_data enc_mbox;              /* encoder mailboxes */
 655         struct ivtv_mailbox_data dec_mbox;              /* decoder mailboxes */
 656         struct ivtv_api_cache api_cache[256];           /* cached API commands */
 657
 658
 659         /* I2C */
 660         struct i2c_adapter i2c_adap;
 661         struct i2c_algo_bit_data i2c_algo;
 662         struct i2c_client i2c_client;
 663         struct i2c_client *i2c_clients[I2C_CLIENTS_MAX];/* pointers to all I2C clients */
 664         int i2c_state;                  /* i2c bit state */
 665         struct mutex i2c_bus_lock;      /* lock i2c bus */
 666
 667
 668         /* Program Index information */
 669         u32 pgm_info_offset;            /* start of pgm info in encoder memory */
 670         u32 pgm_info_num;               /* number of elements in the pgm cyclic buffer in encoder memory */
 671         u32 pgm_info_write_idx;         /* last index written by the card that was transferred to pgm_info[] */
 672         u32 pgm_info_read_idx;          /* last index in pgm_info read by the application */
 673         struct v4l2_enc_idx_entry pgm_info[IVTV_MAX_PGM_INDEX]; /* filled from the pgm cyclic buffer on the card */
 674
 675
 676         /* Miscellaneous */
 677         u32 open_id;                    /* incremented each time an open occurs, is >= 1 */
 678         struct v4l2_prio_state prio;    /* priority state */
 679         int search_pack_header;         /* 1 if ivtv_copy_buf_to_user() is scanning for a pack header (0xba) */
 680         int speed;                      /* current playback speed setting */
 681         u8 speed_mute_audio;            /* 1 if audio should be muted when fast forward */
 682         u64 mpg_data_received;          /* number of bytes received from the MPEG stream */
 683         u64 vbi_data_inserted;          /* number of VBI bytes inserted into the MPEG stream */
 684         u32 last_dec_timing[3];         /* cache last retrieved pts/scr/frame values */
 685         unsigned long dualwatch_jiffies;/* jiffies value of the previous dualwatch check */
 686         u16 dualwatch_stereo_mode;      /* current detected dualwatch stereo mode */
 687
 688
 689         /* VBI state info */
 690         struct vbi_info vbi;            /* VBI-specific data */
 691
 692
 693         /* YUV playback */
 694         struct yuv_playback_info yuv_info;              /* YUV playback data */
 695
 696
 697         /* OSD support */
 698         unsigned long osd_video_pbase;
 699         int osd_global_alpha_state;     /* 1 = global alpha is on */
 700         int osd_local_alpha_state;      /* 1 = local alpha is on */
 701         int osd_chroma_key_state;       /* 1 = chroma-keying is on */
 702         u8  osd_global_alpha;           /* current global alpha */
 703         u32 osd_chroma_key;             /* current chroma key */
 704         struct v4l2_rect osd_rect;      /* current OSD position and size */
 705         struct v4l2_rect main_rect;     /* current Main window position and size */
 706         struct osd_info *osd_info;      /* ivtvfb private OSD info */
 707 };
 708
 709 /* Globals */
 710 extern struct ivtv *ivtv_cards[];
 711 extern int ivtv_cards_active;
 712 extern int ivtv_first_minor;
 713 extern spinlock_t ivtv_cards_lock;
 714
 715 /*==============Prototypes==================*/
 716
 717 /* Hardware/IRQ */
 718 void ivtv_set_irq_mask(struct ivtv *itv, u32 mask);
 719 void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask);
 720
 721 /* try to set output mode, return current mode. */
 722 int ivtv_set_output_mode(struct ivtv *itv, int mode);
 723
 724 /* return current output stream based on current mode */
 725 struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv);
 726
 727 /* Return non-zero if a signal is pending */
 728 int ivtv_msleep_timeout(unsigned int msecs, int intr);
 729
 730 /* Wait on queue, returns -EINTR if interrupted */
 731 int ivtv_waitq(wait_queue_head_t *waitq);
 732
 733 /* Read Hauppauge eeprom */
 734 struct tveeprom; /* forward reference */
 735 void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv);
 736
 737 /* First-open initialization: load firmware, init cx25840, etc. */
 738 int ivtv_init_on_first_open(struct ivtv *itv);
 739
 740 /* This is a PCI post thing, where if the pci register is not read, then
 741    the write doesn't always take effect right away. By reading back the
 742    register any pending PCI writes will be performed (in order), and so
 743    you can be sure that the writes are guaranteed to be done.
 744
 745    Rarely needed, only in some timing sensitive cases.
 746    Apparently if this is not done some motherboards seem
 747    to kill the firmware and get into the broken state until computer is
 748    rebooted. */
 749 #define write_sync(val, reg) \
 750         do { writel(val, reg); readl(reg); } while (0)
 751
 752 #define read_reg(reg) readl(itv->reg_mem + (reg))
 753 #define write_reg(val, reg) writel(val, itv->reg_mem + (reg))
 754 #define write_reg_sync(val, reg) \
 755         do { write_reg(val, reg); read_reg(reg); } while (0)
 756
 757 #define read_enc(addr) readl(itv->enc_mem + (u32)(addr))
 758 #define write_enc(val, addr) writel(val, itv->enc_mem + (u32)(addr))
 759 #define write_enc_sync(val, addr) \
 760         do { write_enc(val, addr); read_enc(addr); } while (0)
 761
 762 #define read_dec(addr) readl(itv->dec_mem + (u32)(addr))
 763 #define write_dec(val, addr) writel(val, itv->dec_mem + (u32)(addr))
 764 #define write_dec_sync(val, addr) \
 765         do { write_dec(val, addr); read_dec(addr); } while (0)
 766
 767 #endif